The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 15, 2001
Filed:
Feb. 17, 1999
Applicant:
Inventors:
Peter Kempf, Rodenbach, DE;
Norbert Brand, Darmstadt, DE;
Helmut Schwind, Hanau, DE;
Stefan Roth, Darmstadt, DE;
Holger Moritz, Mainz, DE;
Assignee:
Roehm GmbH, Darmstadt, DE;
Primary Examiner:
Int. Cl.
CPC ...
B29C 4/302 ; B29C 4/500 ;
U.S. Cl.
CPC ...
B29C 4/302 ; B29C 4/500 ;
Abstract
Substantially sulfur free thermoplastic PMMA containing molding compositions are utilized with non-ferrous metal tools for the manufacture of molded articles. The use of such molding materials having a sulfur content of less than 50 ppm reduces the wear on the non-ferrous metal tools, particularly when utilized with injection molding and pressure molding. As a result of the use of sulfur free molding masses where it necessary to utilize tools of non-ferrous metal, there is a substantial economic advantage in the use thereof.